diff --git a/configs.mjs b/configs.mjs
index aa93229..da79b8f 100644
--- a/configs.mjs
+++ b/configs.mjs
@@ -1,8 +1,9 @@
 class config_rangement {
     log_level = 'info' // 'debug' | 'warn' |'info'
     version = '1.0.0'
-    tagSeparator = '1.0.0'
-    tagSectionSeparator = '1.0.0'
+    iso_date_format = 'yyyy-MM-DDTHH.mm.ss' // target format for dates in file names
+    tagSeparator = ' '
+    tagSectionSeparator = '--'
     keepFreeText = true
     keepTags = true
     replaceUnderscoreWithSpaces = true
@@ -41,6 +42,7 @@ class config_rangement {
             'auto_sort_folder': 'photos/captures écran screenshots'
         },
     }
+   ;
 }
 
 const rangement_instance = new config_rangement();
diff --git a/finder.mjs b/finder.mjs
index 1a41ecc..6f366cc 100644
--- a/finder.mjs
+++ b/finder.mjs
@@ -1,10 +1,11 @@
 /**
  * la classe qui repère des patterns
  */
-import rangement_instance , { tagSectionSeparator, tagSeparator} from './configs.mjs'
+import rangement_instance from './configs.mjs'
 import exifr from 'exifr'
 import moment from 'moment'
 import log from "loglevel";
+
 log.setLevel(rangement_instance.log_level) 
 
 
@@ -27,7 +28,7 @@ export default class finder {
 	}
 
 	static findFormattedDate (filepath) {
-		let match = filepath.match(/\d{4}-\d{2}-\d{2}T\d{2}:\d{2}:\d{2}/ig)
+		let match = filepath.match(/\d{4}-\d{2}-\d{2}T\d{2}\.\d{2}\.\d{2}/ig)
 		log.debug(' finder - match findFormattedDate', match)
 		let result = ''
 		if (match && match[0]) {
@@ -48,7 +49,7 @@ export default class finder {
 	 */
 	static findFileNameFreeTextPart (fileName) {
 		fileName = fileName.replace(this.findFileExtension(fileName), '')
-		let boom = fileName.split(tagSectionSeparator)
+		let boom = fileName.split(rangement_instance.tagSectionSeparator)
 		if (boom.length) {
 			let freeTextPart = boom[0].trim()
 			log.debug(' finder - freeTextPart', freeTextPart)
@@ -76,15 +77,15 @@ export default class finder {
 		inputString = inputString.replace(extensionFile, '')
 
 		log.debug(' finder - extensionFile', extensionFile)
-		if (inputString.includes(tagSectionSeparator)) {
+		if (inputString.includes(rangement_instance.tagSectionSeparator)) {
 			log.debug(' finder - inputString', inputString)
 			if (inputString.length) {
 
-				let boom = inputString.split(tagSectionSeparator)
-				// log.debug(' finder - boom', boom)
+				let boom = inputString.split(rangement_instance.tagSectionSeparator)
+				log.debug(' finder - boom', boom)
 				if (boom.length) {
-					let fileSectionsName = boom.splice(tagSeparator)
-					listOfTags = [...fileSectionsName[1].trim().split(tagSeparator)]
+					let fileSectionsName = boom.splice(rangement_instance.tagSeparator)
+					listOfTags = [...fileSectionsName[1].trim().split(rangement_instance.tagSeparator)]
 					log.debug(' finder - listOfTags', listOfTags)
 				} else {
 					log.debug(' finder - no boom', boom)
@@ -130,7 +131,7 @@ export default class finder {
 		tags.push(tagName)
 		let uniqueArray = [...new Set(tags)]
 
-		let newFileName = firstPart + ' ' + tagSectionSeparator + ' ' + tags.join(tagSeparator)
+		let newFileName = firstPart + ' ' + rangement_instance.tagSectionSeparator + ' ' + tags.join(rangement_instance.tagSeparator)
 		newFileName = newFileName.replace(/ {*}/, '') + this.findFileExtension(fileName)
 		return this.cleanSpaces(newFileName)
 	}
@@ -201,9 +202,9 @@ export default class finder {
 			let minDate = moment.min(moments)
 
 			log.debug(' finder - minDate :::::::::', minDate)
-			log.debug(' finder - minDate :::::::::', minDate.format('yyyy-MM-DDTHH:mm:ss'))
+			log.info(' finder - minDate :::::::::', minDate.format(rangement_instance.iso_date_format))
 
-			return minDate.format('yyyy-MM-DDTHH:mm:ss')
+			return minDate.format(rangement_instance.iso_date_format)
 		} else {
 			log.debug(' finder - pas de exif data')
 			return ''
diff --git a/index.mjs b/index.mjs
index a149219..6546801 100644
--- a/index.mjs
+++ b/index.mjs
@@ -53,6 +53,9 @@ function renameFile(originalFileName, fileMixedNewName) {
         if (err) {
             log.info('rename ERROR: ' + err)
         } else {
+            // otherRenames.push(originalFileName)
+            otherRenames.push(fileMixedNewName)
+
             addOriginalFileNameIfMissing(originalFileName, fileMixedNewName)
             // rangement_instance.statistics['filesModified']++
         }
@@ -72,9 +75,11 @@ function prependFileName(fileProperties, newText) {
 function makeFileNameFromProperties(fileProperties) {
 
     let tagPlace = ''
+    log.info('fileProperties.tags',fileProperties.tags)
     if (fileProperties.tags.length && rangement_instance.keepTags) {
         tagPlace = ' ' + rangement_instance.tagSectionSeparator + ' '+ fileProperties.tags.join(rangement_instance.tagSeparator)
     }
+    console.log('fileProperties.dateStampExif', fileProperties.dateStampExif)
     let newName = ''
         + fileProperties.dateStampExif
         + ' '
@@ -91,11 +96,13 @@ function makeFileNameFromProperties(fileProperties) {
     return newName
 }
 
+let otherRenames = [];
+
 function shouldWeChangeName(structureForFile) {
     log.info(' ______ shouldWeChangeName ', structureForFile.fileNameOriginal)
     let newName = makeFileNameFromProperties(structureForFile)
     log.debug('newName', newName)
-    if (structureForFile.fileNameOriginal !== newName) {
+    if (structureForFile.fileNameOriginal !== newName && !otherRenames.includes(newName)) {
 
         log.info('\n ancien nom :', structureForFile.fileNameOriginal)
 
diff --git a/testFiles/2020-06-21T14:27:19 image.jpg b/testFiles/image.jpg
similarity index 100%
rename from testFiles/2020-06-21T14:27:19 image.jpg
rename to testFiles/image.jpg
diff --git a/testFiles/meme/ FzjSx2YWcAEqsde -- meme.jpg b/testFiles/meme/2023-06-26T18.53.59 FzjSx2YWcAEqsde -- meme.jpg
similarity index 100%
rename from testFiles/meme/ FzjSx2YWcAEqsde -- meme.jpg
rename to testFiles/meme/2023-06-26T18.53.59 FzjSx2YWcAEqsde -- meme.jpg
diff --git a/testFiles/meme/ FyB8cZnWIAc21rw -- meme.jpg b/testFiles/meme/eueueu -- meme.jpg
similarity index 100%
rename from testFiles/meme/ FyB8cZnWIAc21rw -- meme.jpg
rename to testFiles/meme/eueueu -- meme.jpg
diff --git a/testFiles/meme_base/2023-06-14T13.29.22 FyB8cZnWIAc21rw -- meme.jpg b/testFiles/meme_base/2023-06-14T13.29.22 FyB8cZnWIAc21rw -- meme.jpg
new file mode 100644
index 0000000..ed40ffb
Binary files /dev/null and b/testFiles/meme_base/2023-06-14T13.29.22 FyB8cZnWIAc21rw -- meme.jpg differ
diff --git a/testFiles/meme_base/2023-06-26T18.53.59 FzjSx2YWcAEqsde -- meme.jpg b/testFiles/meme_base/2023-06-26T18.53.59 FzjSx2YWcAEqsde -- meme.jpg
new file mode 100644
index 0000000..b150550
Binary files /dev/null and b/testFiles/meme_base/2023-06-26T18.53.59 FzjSx2YWcAEqsde -- meme.jpg differ