# Club char\_filter for a regex pattern and synonyms in the same query
**URL:** https://discuss.elastic.co/t/club-char-filter-for-a-regex-pattern-and-synonyms-in-the-same-query/336383
**Category:** Elasticsearch
**Created:** [June 19, 2023, 2:53pm UTC](https://discuss.elastic.co/t/club-char-filter-for-a-regex-pattern-and-synonyms-in-the-same-query/336383 "2023-06-19T14:53:58Z")
**Posts on this page:** 2
**Page:** 1
### Author:  [@searchwithme](https://discuss.elastic.co/u/searchwithme)
#### Post date: [June 19, 2023, 2:53pm UTC](https://discuss.elastic.co/t/club-char-filter-for-a-regex-pattern-and-synonyms-in-the-same-query/336383/1 "2023-06-19T14:53:58Z")
I have an index that has candidate resumes. Resume has 2 fields: a) name b) resume
Name has name of candidate and resume has a blob of text like "address:""chicago.st", "skill":"python", "[email":"myemail@ymail.com](mailto:email%22:%22myemail@ymail.com)".
I want to create a mapping such that:
a) a search ob python3 also writtens python (synonyms)
b) apply char\_filter to convert . to dot (but I want to apply a regex in the sense the . should convert to dot only if its an email - has @ in it. there is . in the address, that should not be converted to dot.
I have my index settings to accomplish both criteria but I am not sure how to add regex to this so the @ condition is met.
PUT my-index-synonyms-1-modify-1
{
"settings": {
"index": {
"analysis": {
"char\_filter": {
"dot\_char\_filter": {
"type": "pattern\_replace",
"pattern": "\.",
"replacement": "dot"
}
},
"analyzer": {
"my\_analyzer": {
"type": "custom",
"tokenizer": "standard",
"char\_filter": ["dot\_char\_filter"],
"filter": ["lowercase", "my\_filter"]
}
},
"filter": {
"my\_filter": {
"type": "synonym",
"synonyms": ["java, java2, java3"],
"updateable": true
}
}
}
}
},
"mappings": {
"properties": {
"resume": {
"type": "text",
"analyzer": "standard",
"search\_analyzer": "my\_analyzer"
}
}
}
}
Can someone help me please?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [July 17, 2023, 2:54pm UTC](https://discuss.elastic.co/t/club-char-filter-for-a-regex-pattern-and-synonyms-in-the-same-query/336383/2 "2023-07-17T14:54:03Z")
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